Feank ehind



2 Sheets-Sheet 1.

(No Model.)

F. RHIND.

LAMP STANDARD..

No. 246,205. Patented Aug. 23,1881.-

Ifflv lll. all!! N. PUERS PrmwLilhogmpher, wnhmnxm. n. c.

(No Model.) i 2 Sheets-@Sheet 2.

F. RHIND.

LAMP STANDARD.

N0.246,2o5. Patented .1 \11g.123,1881.v

M @4MM Wiz/55555 UNITED STATES PATENT OFFICE. y

FRANK RHIND, OF BROOKLYN, NEW YORK.

LAM P-STAN DARD.

SPECIFICATION formingpart of Letters Patent No. 246,205, dated August23, 1881.

Application filed January 31, 1881. (No model.)

To all whom it may concern:

Beit known that I, FRANK RHIND, of Brooklyn, in the county of Kings andState of New York, have invented certain new and useful Improvements inLamp-Standards and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it pertains to make and use it,reference being had to the accompanying drawings, which form part ofthis specification.

My invention relates to an improvement in lampstandards; and it consistsin forming a screw-thread and an angular tenon upon the under side of alamp-bowl, and forming in the top of the standard an angular socket toreceive the tenon, and attaching to the top of the standard arevolvingscrew-threaded socket to receive the thread upon the under side of thebowl, whereby the lamp-bowl is made readily detachable from the top ofthe standard, and is yet prevented from turning around in such a mannerthat it would be likely to become loosened.

It further consists in securing the standard `to the foot of the lamp bymeans of an angular tube having a flange, head, or projection formedaround its upper end, and which is passed down through l[he standard andthe cross-piece in the bottom of the foot, and then, while the parts arepressed closely together, a collar orstop is slipped down over the lowerend of the top and soldered or otherwise fastened in place while theparts are held together under pressure.

My invention still further consists in filling the whole foot of thelamp and the lower hollow portion of the standard with plaster-of paris,so as to dispense with the braces and other strengthening parts whichhave heretofore been used for the purpose of strengthening the lower endof the standard.

Figure 1 is a vertical section of a lamp embodying my invention. Fig. 2is a plan view of the standard. Fig. 3 is a detail sectional view of thestandard. Fig. 4 is a detail view,

showing how the cap is swiveled upon the tube. Fig. 5 is a verticalsection of a modification of my invention. y

A represents the foot ofthe lamp, having an opening through its. center,and extending across the center of this opening, at any suitabledistance below the under side of the inside portion of the foot, is thebrace 0, which has a hole made through its center'. Resting -upon thetop of the foot is the lower part, D,

through its center for the clamping-tube H to pass through. Theshoulders on the under side of this rod or disk serve to prevent thedisk from moving endwise and enable it to sink down into the part E, soas to be out ofthe way. .This clamping device H, instead of being madeof the solid screw-rod, as has heretofore been used, is here made simplyof an .angular tube having a head, ilange, or other suitable fasteningdevice, I, around its top. rlhis tube is made angular for the purpose ofpreventing any of the parts through which it passes from turning orworking loose, and is made of light sheet metal of any suitable kind,for the purpose of making the lamp as light as possible. After thisangular tube has been passed through the different parts of the standardand the brace in the foot, and while the parts are pressed tightlytogether, the part J is slipped over the lower end of the tube, and theneither soldered or otherwise fastened in place, so as to hold thedifferent parts ot' the standard tightly together. Instead ofthis part,which is here soldered to the tube, any other suitable fastening devicemay be used for the purpose of fastening this tube in place.

Where the clamping-rod is made of around rod, as is usual, should thenut at either end of the rod become loose in the slightest degree, thedifferent parts of the standard and the foot can turn freely around uponthe rod, and thus the lamp is untitted for use until the parts haveagain been tightened in place. By

making the clamping device H of an angulark shape and dispensingentirely with screwthreads this disadvantage is entirely overcome.

As the lower part ofthe standard is usually made of some light sheetmetal which has been .spun or stamped into some ornamental form,

IOO

it is necessary that it should be braced in some manner upon its innerside, so as to prevent the weight of the parts above it and the pressureapplied in securing the diiferent parts together from crushing it out ofshape or breaking it. To dispense with the usual plugs of wood, meta-lplates, and other such things as have heretofore been used, I lill allof this part of the standard and the whole foot with plasterof-paris orother similar cement, which forms a very solid backing for this part ofthe standard, and the surface upon which the labels which are usuallyattached to lamps are to be placed while the plaster is yet moist. Inaddition to the advantages above referred to, this filling also formsthe necessary weight at the base of the lamp to prevent it from beingeasily overturned.

Heretofore it has generally been found necessary to attach the bowlrigidly to the standard, which makes the lamp a very awkward thing toclean while in use in the house, and especially cumbrous in packing themfor transportation. Vhere about eighteen lamps of the kind here showncan be packed in an ordinary barrel for transportation, where the bowlsare secured rigidly to the standard, about thirtysix lamps can be packedin the same space where the bowls are made removable from the standard.In some cases the bowls have been secured to the standard by means ofscrewthreads, so that they can be removed for the purposes described;but when a mere thread alone is used the parts are always liable tobecome loose while in use, and liable to drop off if not kept constantlytight. This kind of lamp is especially feared by housekeepers and timidpersons, and is very objectionable on this account.

Secured to the under side of the lamp-bowl is the bottom plate, L, whichhas projecting from its lower end the screw-thread N and the angulartenon O. This tenon fits in the top of the angular tube which is used tounite the foot and the various parts of the standard together, and thescrew-thread fits in the central screw-threaded socket which is made inthe top of the cap P, which is placed upon the top of the standard. Thelower edges of this screw-threaded socket in the cap P are turnedinward, so as to catch underneath the head or flange formed upon theupper end of the angular tube, and thus the cap is swiveled upon the topof the standard in such a manner that it can be freely turned around.Where the upper end of the tube is made square, as is here shown, theturned-in part of the cap will catch under the square corners of the topof the tube without being turned in far enough to touch the squaresides, and in this manner the cap will freely rotate and yet be heldsecurely in position. After the tenon on the under side of the plate L,which is secured to the under side of the lamp-bowl, has been insertedin the top of the tube, it is only necessary to turn this cap around,when the screw-thread in its center will catch in the screw-thread onthe under side of the bowl, and thus draw the bowl downward tightly intoposition. To release the bowl from the standard it is only necessary toreverse the motion of the screw-cap, when the bowl will be lifted upwarduntil the tenon entirely leaves the socket.

If so desired, the screw-cap can be swiveled upon the under side of thebowl, and the bottom plate will have the socket made in it, the objectof my invention being to unite them together, so that the standard andthe bowl will both remain stationary while the screw-cap is beingrevolved.

Where it is desired to swivel the cap P upon the lower end of the plateL, which is here se cured to the under side of thebowl by means of theprojection a and filling b, it is only necessary to make a groove in thesides of the plate L, in which the turned-in edges of the cap willcatch. The square projection will then be formed upon the top of thestandard.

By means of this construction the bowl is made readily removable fromthe standard without the slightest danger of its becoming accidentallydetached.

lWhere the standard of the lamp is made of a number of light sheet-metalpieces which have been spun into shape, it is very desirable to securethese parts rigidly together independently of the clamping device orsolder or other material which unites the standard to the foot. Afterthese parts have been spun into shape a suitably-shaped hole is punchedonly through the small end of one of them, and then a hole is stampedthrough the other part in such a manner as to leave the punched-up metalQ standing. This punched-up metal is then passed through the hole in theother piece, and then bent outward, as shown in Fig. 1, so as to holdthese two parts rigidly together. This method of securing the two partstogether is very cheap and simple and forms a very effective joint.

Having thus described my invention, I claim- 1. The combination of thefoot, in a lampstandard, with the body portion and angular tube whichpasses through both parts and binds them together, the tube beingprovided with a suitable fastening device at each end for catchingagainst the body and foot, substantially as shown.

2. The combination of a lamp-bowl having plate L secured to its underside, a swiveled screw-cap, an an gular tenon, and a correspondingsocket to receive the tenon, whereby the bowl can be fastened to ordetached from the standard by turning the swiveled cap, substantially asdescribed.

3. The combination of a lamp-bowl having a screw-thread and tenon formedupon its under side with the standard having an angular socket formed inits top and a screw-cap for screwing upon the thread von the under sideof the bowl, substantially as set forth.

IIO

4. The combination, with a lamp-standard In testimony that I claim theforegoing I having a swiveled screw-cap and an angular I have hereuntoset my hand this 28th day of socket, of a lamp-bowl having a means ofat- January, 1881. tachment to the screw-cap and a means for 5preventing both the bowl and the'standard Witnesses:

from rotating while the cap is being turned, F. A. LEHMANN,substantially as specified. A. C. KISKADDEN.

FRANK RHIND.

